Milk shake mixer



FIG. 1 is a perspective view of the front, top, and left side of my new milk shake mixer design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof, the left side being a mirror image of the right side;

FIG. 4 is a rear elevational view thereof; and

FIG. 5 is a top plan view thereof. 

The ornamental design for the milk shake mixer, as shown and described. 